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Forum: Flashes, Lighting, and Studio 1 Day Ago  
Firing flash beyond 1/180? Is it possible without a HSS speedlight?
Posted By amoringello
Replies: 16
Views: 508
Sadly, for your own protection -- assuming you're a complete idiot, Pentax cripples the cameras and refuses to allow flash with shutter speed over the sync speed (1/180 for most models, 1/200 for the K1).
At 90 flashes per second, you might catch one flash during the 1/180s shutter speed. It is likely you would catch no flash.

The flash duration is also important. If it is too short (and the camera could actually catch multiple flashes), you might only get thin bands of light at each pulse.
You either need a very long flash duration (no shorter than your sync speed) -- which some brands use to make an HSS compatible flash.
Or true HSS style pulsing that will generate multiple flashes where each pulse is sent before the brightness fades too much from the prior one.

Cactus V6-II transceiver works well with the RF60 for true HSS without the need for an additional PTTL HSS compliant flash. You do need to update the firmware to Pentax specific code, but if you are not swapping between camera models, it works well. I think you can get a couple heads and the transceiver for less than a Pentax flash.
Forum: Pentax K-1 1 Day Ago  
K1 face detection in live view
Posted By amoringello
Replies: 6
Views: 467
The face recognition is pretty primitive. It picks one, apparently at random, and you cannot choose. I've tried every button and dial both while it was detecting faces, as well as after focus was locked.
I guess your only options is to keep half-pressing and releasing the focus button. A different face might be chosen. Eventually you might get the one you want. :-(
Forum: Pentax Camera and Field Accessories 1 Day Ago  
The difference in brands of polarizing filters?
Posted By amoringello
Replies: 17
Views: 579
There is no reason to not use linear polarizers. I don't know where or why the myth was started about circular polarizers being necessary to prevent issues with focusing and/or metering. Perhaps it had limited truth a decade+ ago, but it is just not the case with current cameras. At least I have yet to see any influence, and have yet to hear of anyone who has been able to provide actual first hand experience of such affects.
Forum: Flashes, Lighting, and Studio 03-10-2018, 03:53 PM  
Multi-color gelled flash lighting
Posted By amoringello
Replies: 5
Views: 251
Sadly, moving subjects. (well, not perfectly still).
But at least it sounds like I'm on the right track.
I'll check out Strobist, I've lost track of how stuff over the past couple of years. :-)

Forum: Flashes, Lighting, and Studio 03-10-2018, 10:50 AM  
Multi-color gelled flash lighting
Posted By amoringello
Replies: 5
Views: 251
I was trying to set up some gelled flash lighting with each strobe being a different color. The resulting being that the shadows are split into the different strobe colors.

I'm not quite getting the look I like. I'm close but can't seem to figure out a few things.
Oddly I just saw something on the Internets (Facebook, I think) about the exact topic. Click bait style over-the-top title of someone famous doing this style shot for fashion or advertising, etc... Regardless, it showed the results I was looking for.

Sadly, I wasn't in a position to read or bookmark it and now I cannot for the life of me find the article (or any worthwhile), neither on Facebook nor with google searches.
I don't expect anyone to know the exact article, but any help on how to get good separation of color would be appreciated.

I'm trying to use grided strobes, as I would assume the more directed light would work best.
Maybe I'm wrong. ???
Forum: Pentax News and Rumors 02-28-2018, 04:49 PM  
"PENTAX K-1 II with a newly designed Cross Tilt Flexible LCD Monitor"...wait, what?
Posted By amoringello
Replies: 32
Views: 2,814
This one apparently includes deadly gamma-ray bursts to help illuminate the scene when high ISO is required.
Forum: Pentax K-1 02-27-2018, 04:49 PM  
K1ii's "Dynamic Pixel Shift" Will Put A Premium On Small High-Quality Lenses
Posted By amoringello
Replies: 36
Views: 1,893
I'm wondering what percentage of people can hold the camera steady enough for the SR to work at a less than 1-pixel resolution for a one second hand held shot.
Even with very high shutter speed, the total process to take four images is nearly four seconds.
I can get sometimes useable images at one second exposure (compared to not using SR), but I'd hardly let someone view them full size... i.e. the sensor is not able to make a perfectly steady image over that time range.
This just seems like snake-oil to me, and I don't see where a heaver or lighter lens isn't going to help much.
Forum: Pentax K-1 02-24-2018, 06:11 AM  
So, I'm supposed to send my camera to these people...? (Precision Camera)
Posted By amoringello
Replies: 23
Views: 1,086
I've had three experiences with Precision repairs... all of them failures.

Sent a lens to Precision. Came back worse than before - THREE TIMES.
After several months of sending the unit back to give Precision their contracted three tries to repair, Ricoh finally sent me a new lens.
Good on Ricoh for doing the right thing, but they do little to ensure Precision actually does any work.

Sent a flash back. Mostly good but missing the diffuser and catchlight panel.
I won't even send it back -- to wait two months and potentially have it come back broken.

Had a camera sent in for cracked top LCD glass cover. Came back with a scratch on the inside of the new glass cover.

I can only imagine what they'll do when the entire camera is opened.
Forum: Pentax K-1 02-22-2018, 05:45 PM  
Poll: K-1 upgrade circuit board or not?
Posted By amoringello
Replies: 116
Views: 4,791
Too much risk sending it away for some unknown period of time, and to Precision Camera no less.
Who knows when it would come back, and if it will be in working order when it does.
No thanks.
Forum: Pentax News and Rumors 02-21-2018, 06:39 PM  
Ricoh announces an upgrade service for current PENTAX K-1 consumers
Posted By amoringello
Replies: 238
Views: 13,931
Wow, I would not dare let Precision touch my fully functional equipment.
I wouldn't trust them to replace the logo, let alone to replace the main circuit board.
Forum: Photographic Technique 02-19-2018, 09:30 AM  
Action Time lapse trial
Posted By amoringello
Replies: 3
Views: 329
Wow, that seems more complex than I would have thought. I have not done any time lapse, and would find the flickering overwhelming to try to fix in post, one frame at a time.
That seems like good info to keep in mind.

One tip in general that I didn't see mentioned is to keep the viewfinder covered. It is normally covered by your face/head, but light coming into the unobstructed viewfinder can affect auto-exposure. (especially if the sun is behind you).
Forum: Pentax Full Frame 02-18-2018, 03:43 PM  
How sharp is the Pentax 70 - 200 f2.8 wide open on K1?
Posted By amoringello
Replies: 33
Views: 2,310
Amazingly sharp at f2.8. I would think keeping the subject properly in focus would be difficult at that aperture, but the K1 focuses so much better than any other Pentax camera I've used. It almost magically focuses on the right spot almost every time.

100% crop, f2.8, 200mm, ISO 250 but still pretty decent.
Forum: Flashes, Lighting, and Studio 02-10-2018, 07:08 AM  
Looking for a light stand bag that is not a light stand bag
Posted By amoringello
Replies: 10
Views: 525
Is there a reason you need a bag? I use bungie cords to bundle four or five together at a time and carry them over my shoulder.

I personally found a large bag to be more clumsy. Even the golf bag with wheels I found a while back was more effort than help.
Although a wheeled bag would probably work better for more heavy weight C-stands, the bungie cords works well when traveling with lighter weight fold up light stands.

I just figured I'd throw out the option, as it's cheaper and might end up being an easier to find option as well. :-)
Forum: General Photography 02-04-2018, 04:43 PM  
In-Camera Encryption
Posted By amoringello
Replies: 15
Views: 603
Jail may be a better alternative to death in those countries where confiscated photos show cause for such a sentence.
Destroying or making images unavailable may still result in jail time but may save a contact's life.
Photojournalists Ask Camera Brands for Encrypted Cameras
Forum: Troubleshooting and Beginner Help 01-20-2018, 04:49 PM  
Limited shutter speed in combination with studio lightning
Posted By amoringello
Replies: 15
Views: 588
Ha! So much to learn. So much more to forget. :cool:
Forum: Pentax DSLR Discussion 01-20-2018, 04:01 PM  
Sorry Sony, your pixel shift doesn't rock
Posted By amoringello
Replies: 35
Views: 2,363
As an 8-bit TIF, there is no advantage.

If it were a 16-bit TIF, there would be no need to find an application to process it properly.
It would also be much smaller, as it would exist as a single image rather than a DNG package of four images.

Of course, I think finding an application to process them now is not so difficult.
So not really a big issue, other than the fact that Ricoh/Pentax pushed the feature into something close to useless at the time of release.
Forum: Pentax Camera and Field Accessories 01-20-2018, 07:20 AM  
What tripod do you use for travel?
Posted By amoringello
Replies: 27
Views: 1,381
The only thing you're likely to get under 45mm and under $100 is the Platapod; PlatypodŽ
But you'd still likely want a ball head of some sort attached to it.

Assuming you meant 45cm, the Mefoto A1350 goes on all my travels. Packs in at 39cm, but its a bit more than your $100 limit.
They do have smaller versions, but the A1350 isn't too tiny for any actual use.
Forum: Troubleshooting and Beginner Help 01-20-2018, 06:33 AM  
Limited shutter speed in combination with studio lightning
Posted By amoringello
Replies: 15
Views: 588
ah! That makes things so much clearer. :-)
Yes, shutter speed will affect *ambient* light. Shutter will not affect most *flash* light, because flash is often faster than your possible shutter speed.

For motionless objects in a studio, this is a more straight forward task (although not necessarily easy) since you should have near complete control of your environment.
You are likely using enough (too much?) flash that the background is also being flood-lit by your flash.
You need to find a way to prevent your flash from lighting the background.

Many potential solutions, you need to figure out what will work. Just couple of options....
1) Move the background further away (look up "Inverse Square Law" with regard to light getting dark faster as you move away from the source.)
2) "Flag" or block off the light from the flash so it does not shine on the background.
3) Use some light modifier (soft box, grid, etc...) to limit where the light falls
4) Change the angle of the flash to keep the light from shining on the background

also, think of putting up black walls around your studio area to prevent flash from bouncing off walls, cabinets, or anything else in the room.

This might result in needing the flash being placed very close to your object (barely out of frame) at a lower power, and your background being a few feet away.
This in turn may result in your needing more lights to properly light all angles of your object.... and you're collection of lighting equipment grows, and grows and grows..... :-)
Forum: Pentax DSLR Discussion 01-19-2018, 04:29 PM  
Sorry Sony, your pixel shift doesn't rock
Posted By amoringello
Replies: 35
Views: 2,363
Yeah, that is a bonus. Heck, I have trouble working with HDR and panos -- and it's a lot more obvious which are part of the set.. :-)
But the in-camera processing to only 8-bit seems more of a short-sighted gimmick on Ricoh's part, especially when TIF is an output option.
Forum: Pentax DSLR Discussion 01-19-2018, 03:35 PM  
Sorry Sony, your pixel shift doesn't rock
Posted By amoringello
Replies: 35
Views: 2,363
Does anyone use Pentax's pixel-shift with in-camera processing? With its rendering being limited to 8-bit output, I would think; why bother with the effort?
I've only done a few, but always post-processed out of the camera.
I don't see why this guy things processing in-camera is such a benefit. The other comments seem to have some merit, but is in-camera processing really worthy of so much attention? Seems he's grasping at straws to make a point. :-(
Forum: Troubleshooting and Beginner Help 01-18-2018, 04:57 PM  
Limited shutter speed in combination with studio lightning
Posted By amoringello
Replies: 15
Views: 588
If you're in the studio, can you explain why you feel that you need a faster shutter speed??
You should be able to control the studio environment such that flash is the controlling factor in freezing any action.

Pentax disables flash above the x-sync speed. Unlike other brands which allow what's been called "hypersync" which allows flash with faster shutter speeds -- with limited success, depending how much you can accept those limitations. :-)
Best you can do is use P-TTl compatible flashes that allow HSS. You can use Pentax brand flashes, Cactus has an option, as do some more recent brand options that range $1000-$2000 per head.
If you're shooting outdoors and need faster shutter speed, you're looking at a lot of $$$ to out-power the sun. (HSS reduces flash power, so you'll need to use multiple flashes in many cases with the lower cost options.)
Forum: Flashes, Lighting, and Studio 01-15-2018, 08:01 AM  
FYI Cactus Triggers
Posted By amoringello
Replies: 10
Views: 706
Wow, I have two V6 triggers that I have not used in a while. It will suck if I cannot use the two flashes separately on different cameras at events now. (I only have one V6ii trigger) :-(
Forum: Troubleshooting and Beginner Help 01-14-2018, 01:04 PM  
pixel shift mode k-1
Posted By amoringello
Replies: 19
Views: 929
Not specifically about screen refresh rate so much as the combination with shutter speed. If your camera is in some sort of auto mode, the shutter speed will change with the amount of light from the screen.
Thus a nearly-all-white screen like Google is going to put out more light and possibly cause your shutter speed to increase. Darker screens may cause a longer shutter speed.

Slower shutter will be more likely to allow multiple screen-refreshes to overlap and help hide variance in pixel brightness which would occur during refresh. The high speed variations caused by refresh could cause pixel-shift to work poorly when putting things back together.

There's a lot of If's and possible places for variation. Which is why some are asking if this occurs for static objects.
Also why I mentioned using Manual setting on the camera to make sure your shutter speed does not vary from image to image.
Forum: Pentax K-1 01-14-2018, 11:45 AM  
RAW+ vs. RAW vs. JPEG
Posted By amoringello
Replies: 30
Views: 1,818
Another aspect, again for speed...
I often shoot RAW on one card and JPEG on the other, when shooting at events or in studio so the images can be transferred quickly to the laptop for preview (or RAW+ if software only handles one card)
Sadly, Pentax's tethering is terribly shotty. It is slow and it locks up the camera a LOT -- The latter resulting in lost images.

I use software to import the JPEG images directly via WiFi into Lightroom to allow immediate previewing by the customer.
The K1's WiFi is horribly slow, but I don't lose images due to camera crashes. JPEG allow much faster upload than RAW but still give a reasonable idea of the final result.

I'll use the RAW images for actual post processing and sale to the customer.
Forum: Troubleshooting and Beginner Help 01-14-2018, 10:41 AM  
pixel shift mode k-1
Posted By amoringello
Replies: 19
Views: 929
What is the shutter speed? Maybe increase your f-stop to slow down your shutter speed and see if that makes a difference.
Or use Manual mode to ensure your shutter speed doesn't change dependent upon the screen color (brightness).

I suspect, like others, that the screen refresh rate is the main culprit and is in conflict with faster shutter speeds.
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